// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "media/blink/cdm_result_promise_helper.h"

#include "base/logging.h"
#include "base/metrics/histogram.h"

namespace media {

CdmResultForUMA ConvertCdmExceptionToResultForUMA(
    CdmPromise::Exception exception_code)
{
    switch (exception_code) {
    case CdmPromise::NOT_SUPPORTED_ERROR:
        return NOT_SUPPORTED_ERROR;
    case CdmPromise::INVALID_STATE_ERROR:
        return INVALID_STATE_ERROR;
    case CdmPromise::INVALID_ACCESS_ERROR:
        return INVALID_ACCESS_ERROR;
    case CdmPromise::QUOTA_EXCEEDED_ERROR:
        return QUOTA_EXCEEDED_ERROR;
    case CdmPromise::UNKNOWN_ERROR:
        return UNKNOWN_ERROR;
    case CdmPromise::CLIENT_ERROR:
        return CLIENT_ERROR;
    case CdmPromise::OUTPUT_ERROR:
        return OUTPUT_ERROR;
    }
    NOTREACHED();
    return UNKNOWN_ERROR;
}

blink::WebContentDecryptionModuleException ConvertCdmException(
    CdmPromise::Exception exception_code)
{
    switch (exception_code) {
    case CdmPromise::NOT_SUPPORTED_ERROR:
        return blink::WebContentDecryptionModuleExceptionNotSupportedError;
    case CdmPromise::INVALID_STATE_ERROR:
        return blink::WebContentDecryptionModuleExceptionInvalidStateError;

    // TODO(jrummell): Since InvalidAccess is not returned, thus should be
    // renamed to TYPE_ERROR. http://crbug.com/570216#c11.
    case CdmPromise::INVALID_ACCESS_ERROR:
        return blink::WebContentDecryptionModuleExceptionTypeError;
    case CdmPromise::QUOTA_EXCEEDED_ERROR:
        return blink::WebContentDecryptionModuleExceptionQuotaExceededError;
    case CdmPromise::UNKNOWN_ERROR:
        return blink::WebContentDecryptionModuleExceptionUnknownError;

    // These are deprecated, and should be removed.
    // http://crbug.com/570216#c11.
    case CdmPromise::CLIENT_ERROR:
    case CdmPromise::OUTPUT_ERROR:
        break;
    }
    NOTREACHED();
    return blink::WebContentDecryptionModuleExceptionUnknownError;
}

void ReportCdmResultUMA(const std::string& uma_name, CdmResultForUMA result)
{
    if (uma_name.empty())
        return;

    base::LinearHistogram::FactoryGet(
        uma_name,
        1,
        NUM_RESULT_CODES,
        NUM_RESULT_CODES + 1,
        base::HistogramBase::kUmaTargetedHistogramFlag)
        ->Add(result);
}

} // namespace media
